Yeezy joined Big Sean in L.A. last night to debut “Champions/Round and Round.”

Less than 24 hours after premiering "Champions/Round and Round," the first single from Cruel Winter, Kanye West made a surprise appearance last night during Big Sean's set at Power 106's Powerhouse concert to perform the track live for the first time. The duo also took time to launch into a handful of other hits, including Life of Pablo standouts "Father Stretch My Hands Pt. 1" and "Famous," as well as Cruel Summer banger "Don't Like." Tomorrow, West heads to New York City to headline the last day of the Governor's Ball music festival.